Table 7 Linear mixed-effect models to predict the nutrient amounts (% initial amount) of Fagus sylvatica, Picea abies and Pinus sylvestris

Conditional R²

74.3

28.6

30.1

65.3

44.3

63

85.8

60.6

Marginal R²

65.8

23.7

26.7

62.8

22.8

47.1

11.7

37.4

Random factor

8.46

4.94

3.43

2.5

21.4

16

74.1

23.2

Decomptime

^{– – –}36.4

⁻2.55

2.57

^{– – –}21.6

Spec

⁻2.38

^– –4.97

^{– – –}6.47

^{– – –}21.5

^– –15.8

Diam

⁺⁺⁺ 21.1

^– –3.08

⁺ 7.08

⁺⁺ 5.43

⁺ 1.8

⁺⁺⁺ 15.9

Decomptime:Spec

⁺⁺⁺ 5.91

⁺⁺⁺ 18.7

⁺⁺⁺ 13.2

⁺⁺⁺ 27

⁺⁺⁺ 20

^{– – –}21.4

Spec:Diam

^– –4.42

^{– – –}11.2

⁺⁺⁺ 9.86